a term used to describe someone who is in a high level of intoxication. can also be used to describe an intense makeout session, as long as you are refering to an intense makeout that happened while drunk.

"man i got so sloshed last night, it was rediculous"
"i was hellof drunk and we sloshed for a good 10 minutes"

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Being sloshed is the weed equivalent of a hangover. Some call it a weed hangover. This feeling is brought on by going to bed high. When sloshed, you feel tired, lazy, and your mind seems a bit hazy and off. When sloshed, you arent high, but you arent one hundred percent sober either.